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Birds strike glass because reflective or transparent glass is often invisible to them. [1] It is estimated that between 100 million and 1 billion birds are killed by collisions in the United States annually, [2] and an estimated 16 to 42 million birds are likewise killed each year in Canada. [3]
Perforated films were sold in the 1970s and 1980s as sun blinds for vehicles and buildings. This was cited in the first patent application for see-through graphics. [4] The blinds had brightly colored and reflective front sides. The reverse side was a non-reflective black color which allowed good visibility through the blind.
The film thickness is selected for level of protection desired and the dimensions of the glass pane. Manufacturers recommend 100 micrometer film (2 ply) for glass up to 3 mm (1/8 in) and 175 micrometer film for glass over 6 mm (1/4 in). These films can be applied for security applications, where a delay of forced entry is desired.
The thicker window films known as safety and security window film are designed to perform under extreme conditions, and as such there are specific standard criteria these films should meet, such as American standards ANSI Z.97, CPSC 16 CFR 1201, Cat II (400 ft-lb), and the British Standards BS 6206 (Class A, B, C).
Metallized boPET film, 32 layers of ~14 μm thickness each. BoPET (biaxially oriented polyethylene terephthalate) is a polyester film made from stretched polyethylene terephthalate (PET) and is used for its high tensile strength, [1] chemical stability, [1] dimensional stability, [2] transparency [1] reflectivity, and electrical insulation. [1]
Agents on patrol discovered two backpacks stuffed with more than $1.1 million worth of cocaine in Washington state near the border with Canada, U.S. Customs and Border Protection said Monday.
Anderson Cooper and Andy Cooper at the Tribeca Film Festival on June 12, 2024. Now, the pair have bonded over fatherhood. Cohen is father to Benjamin, 5, and Lucy, 2, while Cooper shares sons ...
In 2008, 3M created the Renewable Energy Division within 3M's Industrial and Transportation Business to focus on Energy Generation and Energy Management. [ 87 ] [ 88 ] In late 2010, the state of Minnesota sued 3M for $5 billion in punitive damages, claiming they released PFCs —classified a toxic chemical by the EPA—into local waterways. [ 89 ]
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